Wear compensating bolt



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Application 231ml nel# tightening bolts, and epccilioaliy to tliet type oit' soif-tightening or Weer-compensating bolts having .ineens for automatically nd- .'anoing a. \.i'cnicompensating inenibeii' on the bolt tln'ende toretain a snug cooperation bet-Ween the i the bolt.

The general purpose of the invention is to provide a weni--coiinicnsnting bolt pecnlioilg7 adapted toI compensate for irregular Wear of tiie parte with 'which is associated. ln

linie invention relates generally to pursuance of this general purposea tlie prime object of the invention is to provide en nuto matic self-tightening; plicable for use on the connecting` rod beanings ot n crankshaft, which will coifipensate foi.' Weai ol the bearings, lint will yield to varying; pressures caused by the nnevennees of 'Wear on the sliatt to tlic extent necesenry prevent undue stilness of the inotoi' and avoid excessive friction. finotliei` object oi' the invention is to pio vide means foi' convenientlyv assembling the individual unite ofthe device and which in :i simple and. eiiicient manner will enable zipplication of the desired degree oft tension to the nu`t-tightening spying.

Certain incidental adi'in'itagee, suoli as ioillnctioli of motor knocking and loss of. power, nre directly traceable to the inven tion.

Utlici' advantages will be apparent 'upon perusal oi the specification, examination of the drawings and a full nndcietz1n-ding of tlio invention.

ln the drawings 'which ioini a part of t-lio specilication .l lieve shown a. 'ii'eieied om bodiinent and inodilied forni ot tile inten tion as appiied tothe crankshaft ot' ein internal combustion engine, lint it is to be nnileietood that this Showing ie foi' pun poses of illustration only, and netto be constined es limiting the Scope of the piotec ltion to which the invention is entitled, as

bolt particularly np" parte connected by means ofV nienitei1 'which permits :i

e. modified form of an enlarged sectional View bearing; on tne line .ei-Mtof inghto liig. i? snowing the intention;

Fig. 5 is e ivoeispective View of the resilient slight retraction of the cloeine .member to accommodate any eX- eescive piessinfe.

.Referring to Figs; l to 3 of the drawings, the nnineial l designates. a pair 0I" bolts Securing the booting assembly 42 of a connectw ing' 1Jod The members comprising this assembly are en annulaily iecessed jaw ettoiined on the upigiei end of the connecting .rod 3 nnd adopted to receive and Support in the i'nontli 5 thereof n split oeoiing bushing (i n'fliieli :t'oiine bearing; on the sliett 7.,' .At either side of .the nient-ii, the jaw i is longitudinally iioied to' receive. the bolts l, which lock tlie tineliing G lie-tween the jow and complementary closure cop 8. llie cap is siinilnrly recessed and bored and .in op'- eiative position its i'nontli 9 cooperates with the inontli 5 to ictnin the bushing 6, and its bores l0 align nitii. those of the jaw to forni slots .il which lionne the bolts l'. t

Each l line e liezid l2, notched in its ge a shoulder itfit'o'i'ined on tlie nndei` side olif the jew' et fidjncent the slot lLtlins preventing the loolt from tunning in the slot. Finch bolt is funtliei pi'ovided with a sciewtlnended portion l5 of coinpaintiifely long pitch., and on the shank end njitii. en extension loiI reduced diameter. 'Elie ontei' portion 1.6i of this te sion 1s round in cross-section While. the n poi'tion 1G ie square, valno'o Siiglitly gioei: cioseeectional aren. end is tienel to r/eceie e locking versely bored. nt i8 member. E l .nut 19, ln

fing' e, circumferential tienne oi need 2t). enc

iei'ntively long' round neck.

' 2]., cooperates 'with the bolt l to lool: the jow end closure oep, Wiil loolt is ineeited the leo and its threaded sie-.nii projects beyond the top of. thecloslnle cop. ll'ie nntlt is ap `plied head. niet Screwed down until the jow end, eoinpleineiitniy cop nre tight. 'Fliese do not come zogetlieir, n eiight opening being left, which io gi'adnaily iednced es the parte woei". Wesiiei). tits over the equated extension .itb and ie held against ne einem/ed, the.

oliy the slot ltd E? coil spring ons V0 influence cap is locked J boit by necessruf f gngement mimmo;

spring 25 is plncd thus ending fr; a

Squaw; Tm the com hay., I will be undeistond pars Wem they Wi b drawn together thrbugd adm mit upon th@ "dumds t of the spring 25,

of this ehzu'acer through failure i@ cumpensa pansion and cntaci-Qn imi( and Cowling of ih@ hearing( ma be cooling and contraction, the @if baken up in th@ .Hummer desr subsequen heating anc 951mm. justmell; was Gund to@ tig-If, due stlness inmensa@ fried@ I have Qvercome is yision of l'esilien'; mmm aci; im n Sgh emersi; 25, thus prev@ in smaky b adapted to yeo ce1-sione@ by 'emga of he haf Q ustrae spring be um.

upon the f 'i5 is locked il) L' an ammmf gm head 2@ Q i En I i j isV shown in whwith rmmc which mounted a, c:

ik@ co'fifr key {Jl-3 @partum in the @mansion the cap grooves. Then with a crcumeenia slghly nwa'dy fm the resilient number 4T, the lower fase of y. compassas the nec-k of t1 he prbjccton 48.

Wheevel: w following claims: Wx

1n1sc1eW-t1readed engngrmer.- 1M it is to be undersood th is intended to nc'nfle any member- Wch Csm menace flange and the other to the "washer for antomatically advancingr the nut on the bolt, and a resiliently yieldable member adapted to scat in and protrude partially from the recess ot theflange ot the nut to counteract the force of the spring` and vthus to permitl limited retraction ot the jaw and the cap.

7. In a device ot the class described, the combination with a bolt and nut, of means operable upon the nut to compensate automatically for Wear of the parts with which the bolt and nut are associated, a resiliently yieldable member adapted to react against the 'compensating means to permit temporary limited retraction of the parts, and

means independent ot thfe bolt for holding the' member in proper position relative to the bolt.

8. ln a device -ot the class described, the combination with a bolt and nut, of means operable upon the nut to compensate automatically ior wear of the parts with which the bolt and nut are associated, a resiliently yieldable member adapted to react against the compensating means to permit' temporary limited retraction of'v thc parts, and a seat for the member in the nut for holding 1the member in concentric relation to the olt.

9. ln a device of the class described, the combination With means tending automati cally to clamp together the parts with which the device is associated during contraction o'l such parts, of other means also tending automatically to clamp-together the parts,

said Erst mentioned means being incapable of automatic retrograde movement, and said last mentioned means being resiliently' yieldable and interposed between the parts and the lirstmentioied means, whereby to permit temporary limited retraction ot the parte.

10. ln a device of the class described, the combination with a bolt and nut, of a coil spring operable angularly upon the nut to advance the same axially' along,r the bolt and thereby compensate automatically for contraction. of the parts with which the bolt and nutare associated, and a resiliently yieldable member so arranged as to oder resistance both to advancement of the nut and to separation of the parts, whereby limited lretraction of the parts is possible Without retrograde movement ot the nut. l

1l. ln a device ot the class described, a threaded bolt, a nut in screw-threaded engagement with the bolt, a spring connected ,with the nut for screwing the latter along xthe bolt to take up any play in thebolt occa-I sioned by contractionot' the parts which are adapted to be clamped together by the bolt andnut, and another spring acting between the nut and the partl adjacent thereto for permitting slight separation of the parts.'y

l2. In a device tor 'clamping parts together, a bolt, a nut, a coil spring associated with the nut and tending in service to advance the nut helically along the bolt toward the parts, and a substantially flat spring also= associated with the nut and tending in service to maintain the part nearest the nut normally in spaced relation to the nut, said last mentioned spring being resiliently compres# sible to permit the part nearest the nut toI back up toward the nut but only under a force in excess of that transmitted thereto by the nut in advancing under the action ot' the first mentioned spring.

ln testimony whereof signed my name. l

GUSTA/*LV C. MONCKMEER.

I have hereunto 

